Arc-lamp.



W; 0. FISH & R. FLEMING.

ARC LAMP.

APPLIOATION FILED MAY 29, 1903. 925,166,. Patented June 15, 1902*,

2 SHEETS-SHEET 1.

With eases: l nvenbohs,

I Walter ClFish, W Richard Fleming 5 fl W um 114% 1 '1 A'bty- W. G. FISH & R. FLEMING. ARC LAMP.

APPLIOATION FILLED MAY 29, 1903.

925,1 I Patented June 15,1909. 2 SHEETS-SHEET 2.

6 I i g mun W muuumla 9 "*H II'WVQHLOPS Walter OFlsh Richard Fleming YMZDAQ pose to entrap impurities,

UNITED STATES WALTER G. FISH AND RICHARD FLEMING, OF

LYNN, MASSACHUSETTS PATENT OFFICE.

, ASS'IGN ORS TO GENERAL ELECTRIC COMPANY, A CORPORATION or NEW YORK.

I ARC-LAMP.

Specification of Letters Patent. Application filed May 29,

Patented Tune 15, 1909.

1903. Serial No. 159,249.

To all whom it may concern:

c it known that we, WALTER C. FISH and RICHARD FLEMING, citizens of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain ncw and useful Improvements in Arc-Lamps, of which the following is a specification.

In the operation of cert given off by the f smoke. Suitable. provision for removing the smoke from the lamp is necessary or otherwise solid matter Will be deposited from the smoky gases upon the inner surface of the inclosing globe andother portions of the lamp to which it may have access. This is of course objection-able.

To provide means for removing the smoke from the lamp, without at the same time adding materially to the bulk of the lamp, we have constructed a reflector, a necessary part of the lamp, with smoke-carrying passsages or channels in it. In the preferred form of our invention this combined reflector and chimney comprises two annular members or parts arranged substantially parallel to one another but separated by a space.

The outer surface of one of the annular members, which may be polished, enameled or otherwise treated to smooth it, forms the reflecting surface of the lamp, and the space between the two annular pieces forms a passage for the gases given off by the lamp.

The gases enter at thc inner edges of the annular pieces and arcdischarged at or near the outercdgcs the annular-pieces. \Vherc,

as in the lamps designed 'or indoor use, the

40 discl'iargc of the unpurilied gases from the lamp into: the outer atmosphere may be objectionablc, suitable means may be provided for cntra-pping some of the impurities in the gases in the space between the two annular 4.5 parts forming I the combined chimney and ,reflector. One of the ways in which we procontemplates the use of balfle plates suitably arranged to cause a deposit of the heavier impurities within the chimney space.

In'order to readily clean and inspect the interior of the combined reflector and chimney, We prefer to make the two parts separable.

In the form of our invention which We arc in the form 0 have hereinafter illustrated and described, we have shown a construction in which one of the annular members can be readily re- Jmoved from the lamp without disturbing the other of said members.

' Our invention contemplates other improvements in the lamp, all of which Will be t printed out in the claims annexed to and If application.

forming a part of this For a better understanding of our inven- 5 tion, reference can be had to the accompanying. drawings in which we have illustrated one embodiment of our invention.

In the drawing Figure lis an elevation with parts broken awa t and in section illustrating an arc lamp rovided with our combined reflector and c iimney; Fig. 2 is a sectional elevation of the combined chimney and reflector; Fig. 3 is a View showin the under side of the reflector shown in ig. 2 with arts broken awayc; and Fig. 4 is a sectional elevation'illustrating details of the construction of the lamp Referring to the drawings, 1 represents an arc lamp suspended from a fixed support at so 2. The lamp is provided with a horizontal platform or partition 3 through which the movable upper electrode or mechanism for moving it passes. The combined chimney and reflector as well as the globe are carried 8-5 from this platform 3.

The combined reflector and chimney comprises a pair of substantially parallel annular pieces or members 4 and 5. Preferably the members 4 and 5 are formed out of sheet so metal which may be stamped into the de sired form. As is clearly shown in Fig. 2,

l the members 4 and 5 are bothconical but are so shaped that the distance between the inner edges of the members is greater than the distance between the outer edges. The upper member 4 is secured to a down turned flange 6 of the )latform 3 in any suitable manner as by bolts 7. The under surface of the lower member 5 which in I painted, enameled, or otherwise treated to 1 give it a polished appearance, forms the rel fleeting surface of the lamp. At the inner edge of the member 5 an upwardly extending cylindrical flange 8 isformedi ing through this flange to a flanged ortion 10 which extends downward from tlib outer periphery of an annular platform member 10. The platform memsecure the member 5 erlO which is parallel to but separated 110 ay be polished,

Bolts 9 passdiameter of the bore of the tubular member sideof the member 5 and the inner side of the from the platform member 3, has a tubular extend between the plates and 5. This portion 11 projecting from its inner periphleaves spaces 27 and 29 respectively beery. lhree or more rods or bolts 12 which tween the upper edges of the ilates and the may be threaded into the platform member 1 under surface of the member 4. In the form 5 1O... lass through apertures in the platform of our invention we have illustrated in the b. {latches 13,'each pivoted to the 1nember3 drawings, integrally formed upwardly proby a screw or bolt 13 are provided for dejectin'g lugs 27 and 29 iormmeans by tachably securing the rods 1.2 which are which the plates 27 and 29 may be secured notched to receive the latches, and through to the upper member 4 1 10 the rods 12 the membersband 11,to the pla-*-- In the operation of our lamp, air passes form 3. into the globe 16 through the annular space A cylindrical member 14 secured to the between the upper cdgeof' the. globe and the member loby the screws 9 has threaded supporting member in the direction of the arthrough it a plurality of screws 15 by means rows shown in Fig. 1. This passes down 15 of which the globe 16 of the lamp is held in along the inner surface of the globe and then place. The conductor 17 which carries our upward along the electrodes 18 and 24 carrent to the lower electrode 18 of the lamp is rying the products from the are 30 up' shown as passing through an integrally through the tubular member 11. The upper formed tubular lug or boss 19 extending upend of the tubular portion 11 is flared out- 20 ward from the member 11. This boss19 ward as clearly shown in the drawing. The fits an aperture in the platform 3. u per end of the telescoping member 25 is To obtain a frictionless passage of the eleca so flared outwardly. The result is that the trode-carryin'g rod-or member 20 through the natural course for the gases passing through aperture in the platiorm'B and at the same the tubular member 11 is' into the space he- 25 time to prevent passage of gas from the lamp tween the members 4 and 5. The arrows in through such aperture, we have devised the Fig. 1 indicate the path. traversed by the arrangement shown in Fig. 4. In this con.- gases as they pass up through the tubular struction a tubular member 21 having an in-. portion and out throu h the chimney. tegrally formed flange 22 surrounds the elec- As it will be read' y perceived by those 30 trode-carrying device 20. The flange 22 is skilled in the art, the arrangement of the secured to the platform 3 by screws 23 in baflie plates is such that alarge proportion such manner as to form a tight joint, and the of the comparatively heavy impurities oar; body of the member 21 extends downward ried by the gases will be deposited in the V from the platiorm'i-i forsome distance. The shaped troughs formed between the upper 00 21 is somewhat greater than the diameter of nmllar baiiie plates 27 and 29, though under the electrodeearrying rod 20 and the parts certain conditions the impurities may be deare so arranged that the electrode-carrying posited all over the surface of the members rod does not contact with the inner wall of land 5 and the baflie plates 26, 27, 28 and 29. 410 the member. The electrode-carrying device I The; sharpturns, and the narrow and the has an inverted jar-shaped member 25 long path which it would be necessary to folmounted upon t just above the upper elec- I low, prevent the passage of material quantitrode 2 1 which is held in place in any desired ties of the gases through the telescoping way, in'the normal 6 .operation or the lamp, member into the-space above the platform 3. H the members 25 and'21 telescope within one When it is. desired to remove the matter another as shown in Fig. condensed ordeposited'from the'smoke in When. it is desired to collect a comparathe space between the members 4 and 5 it is tively largev amount of the heavier impurionly necessary'to. turn the latches which seties contained in the gases from the lamp in cure the bolts in position and remove the 50 the spacehbetween the members sand-5, a i globeand the member 5. This allows the pluraiityot annular bafile plates 26, 27, 28 I inner portions of the chimney to be cleaned and 29 are employed. The battle plates 26 l with ease. and are formed with flanges 26 and 28 While we have described somewhat in dewhich abut against and maybe-secured to the tail the best form of our invention new inner surface of the member 4. The bodies known to us,- it will readily be seen that oi the plates 26 and 28' are cylmdrical. many changes may be made in the form of The cylindrical portions, however, are not our invention without in any way departing" long enouc' to extend between the plates l from its spirit. I and 5 se spaces 26" and 28 exist be- Whatwe claim as newand desire to secure so "tween under ed e of the battle lates26 day Letters Patent of the United States 1s 1 1 n 1 and and the upper sur'race oi the member 1. In an; arc lamp, electrodes between 5 l eiewer ecl esoi the bafiie lates "hich an arc is maintained a combined re-. l3 w and rest against the upper surface of the fiector'and chimney structure comprising a m nher The bcdi or thesev platesare pair of dished members each having a cenat ,l but ci a length insulficient to tral aperture, said membersbeing spaced 1 39 peripheries, said structure being apart to form a passage between them extending from thcaperturcs in them to their )laccd relat-lve to the are so that one side 0 said structure serves as a reflector for light from the arc, and means for directin the are products into the inner end of sai( passage for discharge at the peripheral end thereof.

In an arc lamp, a pair of electrodes between which an arc is maintained in the normal operation of the lamp, a combined chimney and reflector com )llSlllg a pair of mem- )ers spaced apart'to form an, outwardly extending passa e between them, and-means or directing the volatilized' products of the are into the inner end of said toward the outer end thereof, one of the members bcin I arranged relative to the arc to reflect the 11 ht therefrom.

' amp, a pair of electrodes beare is maintained in the normal operation of the lamp, a reflector contpining an outwardly c passage and formed of 'detachably ohambersand toward the are roducts may be opene for inspectlon-anc cleaning. I 4. In an arc lamp, the combination of are electrodes with a double walled reflector inc osing an outwardly extending chimney space open at the l n an-arc lamp, the combination of arc electrodes with a double walled reflector inclosing an outwardly extending chimney space open at the center for the reception of. t 1e products of combustion, and open at the periphery for the discharge of said products, path for said products within chimney space.

In an arc lamp, electrodes between being side of a reflector for the light from the are, and 'means for direct ing t e are products intothe inner end of said passage for discharge at the outer end thereof.

7. In an arc lamp, a proximately horizontal members spaced apart, separate. means for securing each of said members in fixed relation to the are pair of annular ap- (passages for lam structure, one of said members being rearily releasable to permit the the oorrcs )onding member, and means for r directing the are products into the inner end of the space between sahlmembers for dis charge at the peripheral end thereof.

.n a amp, a combined reflector and chimney, comprising a pair of annular pieces form a space in Wind ismoke may be condensed.

first mentioned members.

11 an arclamp, a platform, an electrode mechanism passing through an aperture in said platform, a' second platform separated from the first y a space, said second platform being a ertured for the passage of said electrode mec anism, a combined reflector, and chimney or the are products comprising two annular members separated by a space, the inner peripheries of said annular members being in proximity to the outer peripheries of the platform, and means comprising telescoping tube sections for pre venting the passage of arc roducts through the aperture in the upper atform.

In an arc lamp, a p atform, an arc inclosing globe with an o ening in its upper end, the upper end of sald globe being separated from said platform by a space,- and a reflector formed with a chimney passage, said reflector being. so arranged that one end ofthe chimney passage leads from the space between the upper end of said globe and said platform.

In witness whereof, we have hereunto set our hands this 27th day of May, 1903.

IVALT JR- 0. FISH. RICHARD FLER'I ING. Witnessesz .DUG'ALD MoK. MoKniLor, Jena 0. MeMANUs.

removal of said platform, the 

